#include <stdio.h>
enum Day
{
  SUNDAY,
  MONDAY,
  TUESDAY,
  WEDNESDAY,
  THURSDAY,
  FRIDAY,
  SATURDAY
};
int main()
{
  enum Day today;
  today = WEDNESDAY;
  printf("Today is day number %d of the week.\n", today);

  enum colors
  {
    Red = 10,
    Green = 20,
    Blue
  };
  printf("%d", Blue);
  return 0;
}